What is CVE-2021-23663?

CVE-2021-23663 is a medium-severity vulnerability in Sey Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.5/10. Published 2021-12-10.

How severe is CVE-2021-23663?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2021-23663 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Prototype Pollution in Sey Project

CVE-2021-23663

All versions of package sey are vulnerable to Prototype Pollution via the deepmerge() function.

Vulnerability class: Prototype Pollution

EPSS: 0.012 (64.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

Affected products

Sey_project Sey
N/a Sey — versions 0

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

Public proof-of-concept exploits

References

report@snyk.io (Exploit, Third Party Advisory, x_refsource_MISC, Mitigation)

Frequently asked questions

What is CVE-2021-23663?: CVE-2021-23663 is a medium-severity vulnerability in Sey Project, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 6.5/10. Published 2021-12-10.
How severe is CVE-2021-23663?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-23663 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.